Technologies
Simultaneous Transmit and Receive (STAR) antennas are capable of sending and receiving a signal at the same time on the same frequency and can double communication data rates in wireless point-to-point communications. However, STAR systems are subject to significant risk of self-interference, or coupling, with the transmitted signal, unintentionally disrupting the antenna’s receiver input. This technology is a full-duplex antenna technique that is capable of achieving self-interference cancellation through polarization duplexing. It offers increased isolation between the transmitter and receiver ports of the antenna across a wide array of bandwidths. The technology provides high levels of coupling mitigation for STAR antennas, with frequency and hardware flexibility, and has applications in next-generation wireless communication systems.
Conventional techniques for self-interference mitigation in STAR antennas involve minimizing the inherent coupling between the antenna’s transmitter and receiver or using a controllable auxiliary path between the two ports to cancel the signal coupling. These techniques often fail to achieve the required cancellation and are not reconfigurable or scalable across a variety of frequencies. This technology utilizes orthogonal linear polarizations to increase the isolation between the transmitter and receiver and a reconfigurable reflective termination that is capable of adapting to environments with nearby signal reflectors. This technique provides more effective cancellation of undesired self-interference signals in a range of different frequencies, enabling faster wide-band data transmission.
This technology has been demonstrated to successfully provide the desired self-interference cancellation at radio frequencies (RF) and at millimeter wave frequencies.
Tech Ventures Reference: IR CU16025